Instructions

In the top of a double boiler, combine all the ingredients except the cornstarch. Heat over simmering water until the ingredients are warm to the touch. Stir continuously during heating. As the sugar dissolves, it may form a crust.
Transfer to a bowl and cool to room temperature. Break the crust and rub the mixture between your fingers so that it returns to granular form. Add the cornstarch and stir. Use immediately or store in a tightly covered glass container in a cool, dark place for several months.
Or: Do what alaskamichael does and omit the cornstarch entirely and just mix the other spices and get to cookin'!